Syntheses and Spectra Characterization of Bimetallic Coordination Polymers with Layer StructureMLFeⅡFeⅢ(OX)3·H2O∞

Two new Schiff base complexes, ZnL(ClO4)·4H2O (A) and CdL(ClO4)·3H2O (B), where L=2-2-(Aminomethyl-amino)-ethylimino-methyl-phenol, have been synthesized and characterized by elemental analysis and infrared spectra. Further, two new bimetallic coordination polymers, MLFeIIFeIII(ox)3·H2O∞ were synthesized and characterized, in which ox2-=oxalate, M=Zn2+(C) or Cd2+(D). The bonds of νas(C=O), δ(C=O) were at 1635, 818 cm-1 for complex C and 1646, 820 cm-1for complex D, respectively. The results of Mussbauer spectra of C and D revealed that there exist two kinds of valence ions. The two bimetallic coordination polymers feature the 2-D layer structure in the solid state, and their anions layer was formed by the FeIIFeIII(ox)3-unit.